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author | Christoph Lameter <clameter@sgi.com> | 2007-10-16 12:25:37 +0400 |
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committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-10-16 20:42:59 +0400 |
commit | 523b945855a1427000ffc707c610abe5947ae607 (patch) | |
tree | 2d84b5b6822a2a20bfd79146c08ce06ac8c80b9b /include/linux/cpuset.h | |
parent | 633c0666b5a5c41c376a5a7e4304d638dc48c1b9 (diff) | |
download | linux-523b945855a1427000ffc707c610abe5947ae607.tar.xz |
Memoryless nodes: Fix GFP_THISNODE behavior
GFP_THISNODE checks that the zone selected is within the pgdat (node) of the
first zone of a nodelist. That only works if the node has memory. A
memoryless node will have its first node on another pgdat (node).
GFP_THISNODE currently will return simply memory on the first pgdat. Thus it
is returning memory on other nodes. GFP_THISNODE should fail if there is no
local memory on a node.
Add a new set of zonelists for each node that only contain the nodes that
belong to the zones itself so that no fallback is possible.
Then modify gfp_type to pickup the right zone based on the presence of
__GFP_THISNODE.
Drop the existing GFP_THISNODE checks from the page_allocators hot path.
Signed-off-by: Christoph Lameter <clameter@sgi.com>
Acked-by: Nishanth Aravamudan <nacc@us.ibm.com>
Tested-by: Lee Schermerhorn <lee.schermerhorn@hp.com>
Acked-by: Bob Picco <bob.picco@hp.com>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Mel Gorman <mel@skynet.ie>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/linux/cpuset.h')
0 files changed, 0 insertions, 0 deletions